EP4343985A1 - Contact, connector, and cable assembly - Google Patents
Contact, connector, and cable assembly Download PDFInfo
- Publication number
- EP4343985A1 EP4343985A1 EP22845687.7A EP22845687A EP4343985A1 EP 4343985 A1 EP4343985 A1 EP 4343985A1 EP 22845687 A EP22845687 A EP 22845687A EP 4343985 A1 EP4343985 A1 EP 4343985A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- outer conductor
- cable
- receiving portion
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004020 conductor Substances 0.000 claims abstract description 116
- 238000012986 modification Methods 0.000 description 16
- 230000004048 modification Effects 0.000 description 16
- 230000013011 mating Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
- H01R9/0518—Connection to outer conductor by crimping or by crimping ferrule
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2103/00—Two poles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
- H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
- H01R9/0527—Connection to outer conductor by action of a resilient member, e.g. spring
Definitions
- This invention relates to a contact configured to be connected to a cable which is provided with an outer conductor.
- Patent Document 1 this type of contact is disclosed in Patent Document 1.
- Patent Document 1 discloses an electric contact means (contact) 90 configured to be connected to a cable 96 which is provided with an outer conductor 98.
- the contact 90 has a crimp portion 92.
- the crimp portion 92 is configured to be crimped on the outer conductor 98 so that it surrounds the outer conductor 98, and thereby the contact 90 is electrically connected with the outer conductor 98.
- Patent Document 1 JPA 2017-168440
- anti-noise performance of the contact might vary when the contact is crimped on an outer conductor.
- An aspect of the present invention provides a contact configured to be connected to a front end portion of a cable in a front-rear direction, the cable having an outer conductor provided on an outer circumference thereof.
- the contact has a crimp portion and a receiving portion.
- the crimp portion is crimped on the outer conductor so that it surrounds the outer conductor under a connected state where the contact is connected to the cable.
- the receiving portion is located forward of the crimp portion and partially receives the outer conductor under the connected state.
- the receiving portion has two or more pressed portions. Each of the pressed portions is located outward of the outer conductor in a perpendicular plane perpendicular to the front-rear direction and is pressed against the outer conductor under the connected state.
- the contact of the present invention When a crimp portion of a contact such as that of Patent Document 1 or the present invention is crimped on an outer conductor of a cable, a part located forward of the crimp portion is formed with a gap. When the gap is formed, electromagnetic shielding performance, or anti-noise performance, of the contact might be degraded.
- the contact of the present invention has the receiving portion which is located forward of the crimp portion.
- the receiving portion has the two or more pressed portions. Each of the pressed portions is pressed against the outer conductor, reliably brought into contact with the outer conductor and prevents degradation of the anti-noise performance of the contact.
- the present invention provides a contact which has stable anti-noise performance.
- a cable assembly 10 according to an embodiment of the present invention comprises a connector 20 and a cable 70.
- the cable 70 has a front end portion 702.
- the front end portion 702 is located at a front end of the cable 70 in a front-rear direction and is attached to a rear end of the connector 20.
- the front-rear direction of the present embodiment is the X-direction. "Forward” means the positive X-direction, and “rearward” means the negative X-direction.
- the cable 70 of the present embodiment comprises one inner conductor 72 made of conductor, an inner dielectric 74 made of insulator, a conductive coat 75 made of conductor, an outer conductor 76 made of conductor and a sheath 78 made of insulator.
- the inner dielectric 74 covers the inner conductor 72 in a perpendicular plane (YZ-plane) perpendicular to the front-rear direction.
- the conductive coat 75 covers the inner dielectric 74 in the YZ-plane.
- the outer conductor 76 covers the conductive coat 75 in the YZ-plane.
- the sheath 78 covers the outer conductor 76 in the YZ-plane.
- the cable 70 of the present embodiment is a coaxial cable which has the aforementioned structure.
- the cable 70 has a circular shape in the YZ-plane.
- the present invention is not limited thereto.
- the cable 70 may comprise two of the inner conductors 72.
- the two inner conductors 72 may form a differential pair.
- the cable 70 may comprise three or more of the inner conductors 72.
- the shape of the cable 70 in the YZ-plane may be an ellipse shape, for example.
- the cable 70 of the present embodiment has the inner conductor 72 which is located at the center thereof in the YZ-plane and the outer conductor 76 which is located outward of the inner conductor 72 in the YZ-plane.
- the inner conductor 72 is a conductive body for transmitting signals.
- the conductive coat 75 is made of aluminum mylar.
- the outer conductor 76 is a braid formed of fine metal wires.
- the conductive coat 75 and the outer conductor 76 cover and electromagnetically shield the inner conductor 72.
- the cable 70 of the present embodiment has the aforementioned shield structure.
- the shield structure of the cable 70 is not specifically limited, provided that the cable 70 has the outer conductor 76.
- the conductive coat 75 may be provided as necessary.
- the outer conductor 76 may be formed of metal foil.
- the front end portion 702 of the cable 70 is processed when the cable assembly 10 is assembled.
- a front end of the sheath 78 is removed, and thereby the outer conductor 76 is partially exposed from the sheath 78.
- the cable 70 has the outer conductor 76 provided on an outer circumference thereof in the YZ-plane.
- a front end of the inner dielectric 74 is removed, and thereby the inner conductor 72 is partially exposed from the inner dielectric 74.
- the connector 20 of the present embodiment comprises a contact 30 made of conductor, a conductive member 40 made of conductor, a dielectric member 50 made of insulator and an inner contact 60 made of conductor.
- Each of the contact 30, the conductive member 40 and the dielectric member 50 of the present embodiment has a hollow cylindrical shape.
- the inner contact 60 of the present embodiment is a metal pin.
- the connector 20 of the present embodiment comprises the aforementioned members.
- the dielectric member 50 and the inner contact 60 may be provided as necessary, provided that the connector 20 comprises the contact 30 and the conductive member 40.
- the connector 20 may further comprise another member in addition to the aforementioned members.
- the connector 20 may further comprise an insulative housing which holds the conductive member 40.
- the structure of each of the dielectric member 50 and the inner contact 60 is not specifically limited.
- the inner contact 60 may be a socket.
- the cable assembly 10 of the present embodiment is assembled as described below.
- the cable 70 is processed as previously described. Then, the inner contact 60 is fixed to a front end of the exposed inner conductor 72 of the cable 70. The thus-fixed inner contact 60 is electrically connected with the inner conductor 72 and extends forward from the front end the inner conductor 72.
- the conductive member 40 is attached to the cable 70 so that the exposed outer conductor 76 of the cable 70 is covered thereby in the YZ-plane.
- a front part of the outer conductor 76 is exposed from the conductive member 40 and extends forward.
- the front part of the outer conductor 76 is folded rearward so that a folded portion 77 is formed.
- the folded portion 77 is a part of the outer conductor 76 which is folded rearward.
- the outer conductor 76 including the folded portion 77 is located on an outer circumference of the cable 70 in the YZ-plane.
- the folded portion 77 covers the conductive member 40 in the YZ-plane.
- the dielectric member 50 is inserted into the contact 30 from front and is attached to the contact 30. Then, the contact 30 is connected to the cable 70 so that the contact 30 covers the folded portion 77 in the YZ-plane. The thus-connected contact 30 is electrically connected with the outer conductor 76. Moreover, when the contact 30 is connected to the cable 70, the dielectric member 50 is attached to the inner contact 60 so that the dielectric member 50 wholly covers the inner contact 60 in the YZ-plane. The thus-attached dielectric member 50 insulates the inner contact 60.
- the cable assembly 10 which is assembled as described above comprises the contact 30 and the cable 70.
- the contact 30 is connected to the front end portion 702 of the cable 70.
- the outer conductor 76 is formed with the folded portion 77.
- the contact 30 is connected to the folded portion 77 of the outer conductor 76.
- the present invention is not limited thereto.
- the folded portion 77 may be formed as necessary.
- the conductive member 40 may be inserted between the outer conductor 76 and the inner dielectric 74.
- the conductive member 40 does not need to be provided.
- the contact 30 may be connected to the outer conductor 76 which is not folded.
- the front end portion 702 which is one of end portions of the cable 70 is connected to the connector 20.
- the opposite end portion (not shown) of the cable 70 is connected to an electronic device (not shown).
- the electronic device Under a mated state where the connector 20 is mated with a mating connector (not shown), the electronic device is electrically connected with a mating electronic device (not shown) which is provided with the mating connector.
- the inner contact 60 Under the mated state, the inner contact 60 is connected to a mating signal contact (not shown) of the mating connector and transmits high-frequency signals, for example.
- the contact 30 and the conductive member 40 have ground potentials and reduce noise due to high-frequency signals.
- the contact 30 is configured to be connected to the front end portion 702 of the cable 70 in the front-rear direction, the cable 70 having the outer conductor 76 provided on the outer circumference thereof.
- the contact 30 extends along the front-rear direction.
- the contact 30 of the present embodiment is formed by bending a single metal plate about an imaginary axis AX extending in parallel to the front-rear direction.
- the contact 30 is a single metal plate with bends.
- the contact 30 is formed with a slit 302 which extends along the front-rear direction.
- the slit 302 is a narrow space.
- the slit 302 is located between opposite edges of the bent metal plate in a lateral direction perpendicular to the front-rear direction.
- the slit 302 is located at an upper end of the contact 30 in an upper-lower direction perpendicular to both the front-rear direction and the lateral direction.
- the lateral direction of the present embodiment is the Y-direction.
- the upper-lower direction of the present embodiment is the Z-direction. "Upward" means the positive Z-direction, and "downward” means the negative Z-direction.
- the contact 30 is formed with a passing hole 31.
- the passing hole 31 extends along the imaginary axis AX and passes through the contact 30 in the front-rear direction.
- the dielectric member 50 and the inner contact 60 are accommodated in the passing hole 31.
- the passing hole 31 of the present embodiment has a circular shape in the YZ-plane.
- the present invention is not limited thereto, but the shape of the passing hole 31 can be modified as necessary.
- the contact 30 of the present embodiment has a connection portion 32, a narrow portion 34, a receiving portion 35 and a crimp portion 39.
- the connection portion 32 is a front part of the contact 30.
- the crimp portion 39 is a rear part of the contact 30.
- the receiving portion 35 is located forward of the crimp portion 39.
- the narrow portion 34 is located between the connection portion 32 and the receiving portion 35 in the front-rear direction. In other words, the narrow portion 34 is located forward of the receiving portion 35.
- the contact 30 of the present embodiment has the aforementioned structure. However, the present invention is not limited thereto, but the structure of the contact 30 can be modified as necessary. For example, the contact 30 may further have another portion in addition to the aforementioned portions.
- connection portion 32 of the present embodiment extends along the front-rear direction.
- the connection portion 32 is connected to a mating conductive member (not shown) of the mating connector (not shown) under the mated state.
- the connection portion 32 of the present embodiment has a circular shape in the YZ-plane.
- the present invention is not limited thereto, but the shape of the connection portion 32 can be modified as necessary.
- the connection portion 32 may have a rectangular shape in the YZ-plane.
- the crimp portion 39 of the present embodiment has an open barrel shape.
- the crimp portion 39 has two crimp pieces 392.
- the crimp pieces 392 are apart from each other before the contact 30 is connected to the cable 70 (see Fig. 6 ).
- the crimp portion 39 is opened before the contact 30 is connected to the cable 70.
- the crimp portion 39 is crimped around the cable 70.
- the two crimp pieces 392 are combined together so that they are wound around the outer conductor 76 and the sheath 78 of the front end portion 702.
- the crimp portion 39 is crimped on the outer conductor 76 so that it surrounds the outer conductor 76 under a connected state, or a state shown in Fig. 6 , where the contact 30 is connected to the cable 70.
- the crimp portion 39 is closed under the connected state, and thereby the contact 30 is securely fixed to the cable 70.
- the crimp portion 39 of the present embodiment is crimped around the folded portion 77 of the cable 70.
- the folded portion 77 covers the conductive member 40.
- the conductive member 40 of the present embodiment is made of metal and has rigidity. The conductive member 40 prevents the cable 70 from being deformed when the crimp portion 39 is crimped, and thereby the crimp portion 39 is securely crimped around the folded portion 77.
- the present invention is not limited thereto, but the conductive member 40 may be provided as necessary.
- the crimp portion 39 of the present embodiment encloses the outer conductor 76 with no gap under the connected state except for a slight space formed between the two crimp pieces 392.
- the present invention is not limited thereto.
- the structure of the crimp portion 39 can be modified as necessary.
- the receiving portion 35 of the present embodiment has a front portion 352 and a rear portion 354.
- the front portion 352 is a front part of the receiving portion 35.
- the front portion 352 is gradually narrowed forward.
- a size of the front portion 352 in the YZ-plane becomes gradually smaller forward.
- the rear portion 354 is a rear part of the receiving portion 35.
- the rear portion 354 has a cylindrical shape as a whole.
- the rear portion 354 has a constant size in the YZ-plane regardless of a position thereof in the front-rear direction.
- the receiving portion 35 of the present embodiment has the aforementioned structure.
- the present invention is not limited thereto.
- the receiving portion 35 may have only the rear portion 354.
- the receiving portion 35 of the present embodiment has a body 36 and four pressed portions (spring pieces) 37.
- Each of the body 36 and the pressed portions 37 is a part of the rear portion 354.
- the body 36 has a ring-like portion 362.
- the ring-like portion 362 has a circular shape in the YZ-plane.
- the body 36 has a remaining portion which extends rearward from a lower part of the ring-like portion 362.
- the pressed portions 37 extend rearward from an upper part of the ring-like portion 362.
- the rear portion 354 of the present embodiment has the aforementioned structure.
- the present invention is not limited thereto.
- the ring-like portion 362 may be provided as necessary.
- the body 36 has an inner surface 364.
- the inner surface 364 is an inside surface of the body 36 in the YZ-plane and faces the passing hole 31.
- the inner surface 364 of the body 36 extends along the front-rear direction in an imaginary cylindrical surface around the imaginary axis AX.
- Each of the pressed portions 37 extends along the front-rear direction and has a front end 372 and a rear end 374. Each of the front ends 372 is connected to a rear edge of the ring-like portion 362 of the body 36.
- Each of the pressed portions 37 has a sloping surface 378. Each of the sloping surfaces 378 faces the passing hole 31.
- Each of the pressed portions 37 has a part which is located in the vicinity of the rear end 374 and is inclined outward in the YZ-plane. As can be seen from the explanation described above, the passing hole 31 of the receiving portion 35 of the present embodiment is widened rearward as a whole.
- the body 36 of the present embodiment is formed with five cut 38.
- Each of the cuts 38 extends along the front-rear direction and passes through the body 36 in the radial direction about the imaginary axis AX.
- Each of the pressed portions 37 of the present embodiment is a spring piece 37.
- Each of the pressed portions 37 is located between two of the cuts 38 adjacent to each other in a circumferential direction about the imaginary axis AX.
- Each of the pressed portions (spring pieces) 37 extends along the front-rear direction and is resiliently deformable with the rear end 374 which is a free end.
- the front end portion 702 of the cable 70 is inserted into the passing hole 31 of the contact 30 from behind before the crimp portion 39 is crimped around the cable 70 in a process in which the contact 30 is connected to the cable 70.
- explanation will be made about the contact 30 and the conductive member 40, and explanation will be made about an insertion process of the front end portion 702.
- a cross-section of the passing hole 31 in the YZ-plane is referred to as "hole cross-section”
- a cross-section of the cable 70 in the YZ-plane is referred to as "cable cross-section”.
- the hole cross-section at the rear end 374 of the sloping surface 378 of the receiving portion 35 is larger than the cable cross-section in the vicinity of a front end of the outer conductor 76 of the cable 70.
- the hole cross-section at the front end 372 of the sloping surface 378 is smaller than the cable cross-section in the vicinity of the front end of the outer conductor 76 of the cable 70.
- the narrow portion 34 of the present embodiment has a size in the YZ-plane which is smaller than another size of the receiving portion 35 in the YZ-plane.
- the hole cross-section at the narrow portion 34 is smaller than the hole cross-section at the front end 372 of the sloping surface 378.
- the hole cross-section at the narrow portion 34 is smaller than the cable cross-section in the vicinity of the front end of the outer conductor 76 of the cable 70.
- the hole cross-section at the narrow portion 34 is larger than the cable cross-section of the inner dielectric 74 of the cable 70.
- the outer conductor 76 of the front end portion 702 is insertable into the receiving portion 35 but is not insertable into the narrow portion 34.
- the inner dielectric 74 and the inner conductor 72 of the front end portion 702 are insertable into the passing hole 31 of the connection portion 32 through the narrow portion 34 together with the inner contact 60.
- the narrow portion 34 of the present embodiment defines a front end of the receiving portion 35 in which the outer conductor 76 is receivable.
- the present invention is not limited thereto.
- the narrow portion 34 may be provided as necessary.
- the outer conductor 76 of the front end portion 702 is guided by the sloping surfaces 378 of the pressed portions 37 of the receiving portion 35 and is received in a rear end portion of the receiving portion 35.
- the outer conductor 76 is moved forward while resiliently deforming the pressed portions 37.
- each of the pressed portions 37 is resiliently deformed while the rear end 374 is moved outward in the YZ-plane.
- the front end portion 702 When the front end portion 702 is continuously inserted, the front end of the outer conductor 76 is brought into abutment with an inner wall of the front portion 352 of the receiving portion 35, and the insertion of the front end portion 702 ends. At that time, the inner conductor 72 of the front end portion 702 has passed through the receiving portion 35 and is located in the connection portion 32.
- the receiving portion 35 partially receives the outer conductor 76 under the connected state.
- each of the resiliently deformed pressed portions 37 is pressed against the outer conductor 76 by a restoring force.
- the front end of the outer conductor 76 is located forward of front ends of the cuts 38.
- the outer conductor 76 can be reliably connected to the receiving portion 35.
- the present invention is not limited thereto.
- the front end of the outer conductor 76 may be located rearward of the front ends of the cuts 38 under the connected state.
- each of the pressed portions 37 is pressed against the outer conductor 76 while being resiliently deformed in a process in which the outer conductor 76 of the cable 70 is inserted into the receiving portion 35.
- the present invention is not limited thereto.
- the hole cross-section at the front end 372 of the sloping surface 378 of the receiving portion 35 may be larger than the cable cross-section in the vicinity of the front end of the outer conductor 76.
- each of the pressed portions 37 may be plastically deformed inward in the YZ-plane to be pressed against the outer conductor 76 after the outer conductor 76 is received in the receiving portion 35.
- each of the crimp pieces 392 of the crimp portion 39 is apart from the receiving portion 35 and is located rearward of the receiving portion 35.
- the crimp pieces 392 can be easily wound around the outer conductor 76 of the cable 70.
- the gap GP is formed between the crimp pieces 392 and the receiving portion 35.
- the contact 30 of the present embodiment has the receiving portion 35 which is located forward of the crimp portion 39.
- the receiving portion 35 has two or more of the pressed portions 37.
- Each of the pressed portions 37 is pressed against the outer conductor 76 to be reliably brought into abutment with the outer conductor 76 and prevent degradation of the anti-noise performance of the contact 30.
- the present embodiment provides the contact 30 which has stable anti-noise performance.
- the conductive member 40 of the present embodiment has a received portion 42.
- the received portion 42 is located at a front end of the conductive member 40.
- the received portion 42 is narrowed forward.
- a size of the received portion 42 in the YZ-plane becomes gradually smaller forward.
- the outer conductor 76 is formed with the folded portion 77 which is folded rearward, and the conductive member 40 is located inward of the folded portion 77 in the YZ-plane.
- the outer conductor 76 of the cable 70 is inserted into the receiving portion 35 together with the conductive member 40 having the received portion 42.
- the outer conductor 76 can be smoothly inserted into the receiving portion 35 because the conductive member 40 having the tapered received portion 42 is provided.
- the present invention is not limited thereto, but the structure of the conductive member 40 can be modified as necessary.
- the outer conductor 76 is formed with the folded portion 77 which is folded rearward, the conductive member 40 is located inward of the folded portion 77 in the YZ-plane, the folded portion 77 is sandwiched between the crimp portion 39 and the conductive member 40, and the received portion 42 of the conductive member 40 is received in the receiving portion 35 of the contact 30 together with the folded portion 77.
- the pressed portions 37 of the present embodiment have shapes same as each other. Moreover, the pressed portions 37 are arranged in the circumferential direction about the imaginary axis AX with regular intervals. However, the present invention is not limited thereto.
- the pressed portions 37 may have shapes different from each other. Only two of the pressed portions 37 may be formed. These two pressed portions 37 may extend rearward from the vicinity of an upper end of the ring-like portion 362. Instead, a large number of the pressed portions 37 may be formed over whole of the ring-like portion 362 in the circumferential direction. The contact 30 is more reliably brought into contact with the outer conductor 76 of the cable 70 by increasing the number of the pressed portions 37.
- each of the cuts 38 of the present embodiment has a size LC in the front-rear direction which is half or more of another size LR of the body 36 in the front-rear direction.
- a size of each of the pressed portions 37 can be made large in the front-rear direction and a spring characteristic of each of the pressed portions 37 can be made high.
- the size LC in the front-rear direction is larger than a size WC in the circumferential direction about the imaginary axis AX (see Fig. 5 ).
- a necessary number of the pressed portions 37 can be formed while the spring characteristic of each of the pressed portions 37 is made high.
- the present invention is not limited thereto, but the structure of each of the cuts 38 can be modified as necessary.
- the present embodiment can be further variously modified in addition to the already described various modifications. Hereafter, explanation will be made about modifications of the pressed portion 37.
- a cable assembly 10A according to a first modification comprises a connector 20A different from the connector 20 and the cable 70 same as that of the cable assembly 10.
- the connector 20A has the same structure as that of the connector 20 except that it comprises a contact 30A different from the contact 30.
- the contact 30A has the same structure as that of the contact 30 except that it has a receiving portion 35A different from the receiving portion 35.
- the receiving portion 35A has a body 36A different from the body 36 and has four pressed portions (projecting portions) 37A instead of the pressed portions 37.
- the body 36A has an inner surface 364A different from the inner surface 364.
- the receiving portion 35A has the same structure as that of the receiving portion 35 except for the aforementioned differences.
- the body 36A has a circular ring shape.
- the inner surface 364A of the body 36A extends along the front-rear direction in an imaginary cylindrical surface.
- Each of the pressed portions 37A of the present modification is a projecting portion 37A.
- Each of the projecting portions 37A projects inward from the inner surface 364A of the receiving portion 35A in the YZ-plane.
- the outer conductor 76 including the folded portion 77 may be press-fit into the receiving portion 35A.
- a part of the body 36A which is formed with the pressed portions 37A may be opened outward in the YZ-plane before the outer conductor 76 is inserted into the receiving portion 35A.
- the open part may be closed after the outer conductor 76 is received in the receiving portion 35.
- the outer conductor 76 is pressed against the pressed portions 37A.
- each of the pressed portions 37A is located outward of the outer conductor 76 in the YZ-plane and is pressed against the outer conductor 76 under the connected state.
- the present modification provides the contact 30A which has stable anti-noise performance.
- the pressed portions 37A of the present modification are provided only on an upper part of the inner surface 364A of the body 36A and are arranged in the circumferential direction about the imaginary axis AX with regular intervals.
- the present invention is not limited thereto.
- the number and the arrangement of the pressed portions 37A can be modified as necessary.
- a cable assembly 10B according to a second modification comprises a connector 20B different from the connector 20 and the cable 70 same as that of the cable assembly 10.
- the connector 20B has the same structure as that of the connector 20 except that it comprises a contact 30B different from the contact 30.
- the contact 30B has the same structure as that of the contact 30 except that it has a receiving portion 35B different from the receiving portion 35.
- the receiving portion 35B has a rear portion 354B different from the rear portion 354.
- the rear portion 354B has four pressed portions (spring pieces) 37B instead of the pressed portions 37.
- the receiving portion 35B has the same structure as that of the receiving portion 35 except for the aforementioned differences.
- each of the pressed portions 37B is a spring piece 37B.
- Each of the spring pieces 37B has a structure similar to that of the spring piece 37 and is resiliently deformable similarly to the spring piece 37. However, each of the spring pieces 37B is different from the spring piece 37 in that it extends rearward along the front-rear direction while being inclined inward in the YZ-plane under a state where the contact 30B is not connected to the cable 70 (see Fig. 10 ). Referring to Fig. 11 , each of the spring pieces 37B extends rearward along the front-rear direction while being inclined inward in the YZ-plane even under the connected state.
- each of the pressed portions 37B is pressed by the outer conductor 76 and is resiliently deformed so that the pressed portions 37B are opened outward in the YZ-plane.
- each of the pressed portions 37B is more securely pressed against the outer conductor 76 than the pressed portion 37.
- each of the pressed portions 37B is located outward of the outer conductor 76 in the YZ-plane and is pressed against the outer conductor 76 under the connected state.
- the present modification provides the contact 30B which has stable anti-noise performance.
- the receiving portion 35B of the present modification can be modified similarly to the receiving portion 35.
- the aforementioned embodiment can be further variously modified in addition to the already described various modification.
- the receiving portion 35 may have one or more of the spring pieces 37 and one or more of the projecting portions 37A.
- at least one of the pressed portions 37 may be a spring piece, and at least one of the pressed portions 37 may be a projecting portion.
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
A contact 30 is connected to a front end 702 in the longitudinal direction (X direction) of a cable 70 provided with an outer conductor at the outer periphery thereof. The contact 30 has a pressure bonding part 39 and an acceptance part 35. The pressure bonding part 39 is pressure-bonded to the outer conductor 76 so as to surround the outer conductor 76 in a connection state in which the contact 30 is connected to the cable 70. The acceptance part 35 is located in front of the pressure bonding part 39, and partially accepts the outer conductor 76 in the connection state. The acceptance part 35 has at least two parts to be pressed 37. Each of the parts to be pressed 37 is located outside the outer conductor 76 on an orthogonal plane (Y-Z plane) and pressed against the outer conductor 76 in a connection state.
Description
- This invention relates to a contact configured to be connected to a cable which is provided with an outer conductor.
- For example, this type of contact is disclosed in Patent Document 1.
- Referring to
Fig. 15 , Patent Document 1 discloses an electric contact means (contact) 90 configured to be connected to acable 96 which is provided with anouter conductor 98. Thecontact 90 has acrimp portion 92. Thecrimp portion 92 is configured to be crimped on theouter conductor 98 so that it surrounds theouter conductor 98, and thereby thecontact 90 is electrically connected with theouter conductor 98. - Patent Document 1:
JPA 2017-168440 - According to an existing contact such as that of Patent Document 1, anti-noise performance of the contact might vary when the contact is crimped on an outer conductor.
- It is therefore an object of the present invention to provide a contact which has stable anti-noise performance.
- An aspect of the present invention provides a contact configured to be connected to a front end portion of a cable in a front-rear direction, the cable having an outer conductor provided on an outer circumference thereof. The contact has a crimp portion and a receiving portion. The crimp portion is crimped on the outer conductor so that it surrounds the outer conductor under a connected state where the contact is connected to the cable. The receiving portion is located forward of the crimp portion and partially receives the outer conductor under the connected state. The receiving portion has two or more pressed portions. Each of the pressed portions is located outward of the outer conductor in a perpendicular plane perpendicular to the front-rear direction and is pressed against the outer conductor under the connected state.
- When a crimp portion of a contact such as that of Patent Document 1 or the present invention is crimped on an outer conductor of a cable, a part located forward of the crimp portion is formed with a gap. When the gap is formed, electromagnetic shielding performance, or anti-noise performance, of the contact might be degraded. However, the contact of the present invention has the receiving portion which is located forward of the crimp portion. The receiving portion has the two or more pressed portions. Each of the pressed portions is pressed against the outer conductor, reliably brought into contact with the outer conductor and prevents degradation of the anti-noise performance of the contact. Thus, the present invention provides a contact which has stable anti-noise performance.
- An appreciation of the objectives of the present invention and a more complete understanding of its structure may be had by studying the following description of the preferred embodiment and by referring to the accompanying drawings.
-
-
Fig. 1 is a perspective view showing a cable assembly according to an embodiment of the present invention, wherein an imaginary axis of a contact is illustrated with dashed line. -
Fig. 2 is an exploded, perspective view showing the cable assembly ofFig. 1 . -
Fig. 3 is a perspective view showing the contact of the cable assembly ofFig. 1 , wherein a crimp portion of the contact is opened, and the imaginary axis is illustrated with dashed line. -
Fig. 4 is another perspective view showing the contact ofFig. 3 , wherein the crimp portion of the contact is closed, and the imaginary axis is illustrated with dashed line. -
Fig. 5 is a perspective view showing a receiving portion of the contact ofFig. 4 , wherein a position of a front end of a pressed portion is illustrated with dashed line, and the imaginary axis is illustrated with chain dotted line. -
Fig. 6 is a top view showing the cable assembly ofFig. 1 . -
Fig. 7 is a cross-sectional view showing the cable assembly ofFig. 6 , taken along line VII-VII, wherein a part of the cable assembly enclosed by dashed line is enlarged and illustrated. -
Fig. 8 is a top view showing a first modification of the cable assembly ofFig. 6 . -
Fig. 9 is a perspective view showing a receiving portion of a contact of the cable assembly ofFig. 8 , wherein the imaginary axis is illustrated with dashed line. -
Fig. 10 is a top view showing a second modification of the cable assembly ofFig. 6 . -
Fig. 11 is a cross-sectional view partially showing the cable assembly ofFig. 10 , taken along line XI-XI, wherein the illustrated cross-section corresponds to the enlarged view ofFig. 7 . -
Fig. 12 is a top view showing a contact of the cable assembly ofFig. 10 , wherein a crimp portion of the contact is closed. -
Fig. 13 is a cross-sectional view partially showing the contact ofFig. 12 , taken along line XIII-XIII. -
Fig. 14 is a perspective view showing a receiving portion of the contact ofFig. 12 . -
Fig. 15 is a perspective view showing a contact of Patent Document 1 together with a cable. - While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the drawings and detailed description thereto are not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents and alternatives falling within the spirit and scope of the present invention as defined by the appended claims.
- Referring to
Figs. 1 and 2 , acable assembly 10 according to an embodiment of the present invention comprises aconnector 20 and acable 70. Thecable 70 has afront end portion 702. Thefront end portion 702 is located at a front end of thecable 70 in a front-rear direction and is attached to a rear end of theconnector 20. The front-rear direction of the present embodiment is the X-direction. "Forward" means the positive X-direction, and "rearward" means the negative X-direction. - Referring to
Figs. 2 and7 , thecable 70 of the present embodiment comprises oneinner conductor 72 made of conductor, an inner dielectric 74 made of insulator, aconductive coat 75 made of conductor, anouter conductor 76 made of conductor and asheath 78 made of insulator. The inner dielectric 74 covers theinner conductor 72 in a perpendicular plane (YZ-plane) perpendicular to the front-rear direction. Theconductive coat 75 covers the inner dielectric 74 in the YZ-plane. Theouter conductor 76 covers theconductive coat 75 in the YZ-plane. Thesheath 78 covers theouter conductor 76 in the YZ-plane. - The
cable 70 of the present embodiment is a coaxial cable which has the aforementioned structure. Thecable 70 has a circular shape in the YZ-plane. However, the present invention is not limited thereto. For example, thecable 70 may comprise two of theinner conductors 72. The twoinner conductors 72 may form a differential pair. Thecable 70 may comprise three or more of theinner conductors 72. The shape of thecable 70 in the YZ-plane may be an ellipse shape, for example. - The
cable 70 of the present embodiment has theinner conductor 72 which is located at the center thereof in the YZ-plane and theouter conductor 76 which is located outward of theinner conductor 72 in the YZ-plane. Theinner conductor 72 is a conductive body for transmitting signals. Theconductive coat 75 is made of aluminum mylar. Theouter conductor 76 is a braid formed of fine metal wires. Theconductive coat 75 and theouter conductor 76 cover and electromagnetically shield theinner conductor 72. Thecable 70 of the present embodiment has the aforementioned shield structure. However, the shield structure of thecable 70 is not specifically limited, provided that thecable 70 has theouter conductor 76. For example, theconductive coat 75 may be provided as necessary. Theouter conductor 76 may be formed of metal foil. - As can be seen from
Figs. 2 and7 , thefront end portion 702 of thecable 70 is processed when thecable assembly 10 is assembled. In detail, a front end of thesheath 78 is removed, and thereby theouter conductor 76 is partially exposed from thesheath 78. Thus, thecable 70 has theouter conductor 76 provided on an outer circumference thereof in the YZ-plane. Moreover, a front end of theinner dielectric 74 is removed, and thereby theinner conductor 72 is partially exposed from theinner dielectric 74. - Referring to
Fig. 2 , theconnector 20 of the present embodiment comprises acontact 30 made of conductor, aconductive member 40 made of conductor, adielectric member 50 made of insulator and aninner contact 60 made of conductor. Each of thecontact 30, theconductive member 40 and thedielectric member 50 of the present embodiment has a hollow cylindrical shape. Theinner contact 60 of the present embodiment is a metal pin. - The
connector 20 of the present embodiment comprises the aforementioned members. However, the present invention is not limited thereto. Thedielectric member 50 and theinner contact 60 may be provided as necessary, provided that theconnector 20 comprises thecontact 30 and theconductive member 40. Instead, theconnector 20 may further comprise another member in addition to the aforementioned members. For example, theconnector 20 may further comprise an insulative housing which holds theconductive member 40. The structure of each of thedielectric member 50 and theinner contact 60 is not specifically limited. For example, theinner contact 60 may be a socket. - The
cable assembly 10 of the present embodiment is assembled as described below. - Referring to
Figs. 2 and7 , first, thecable 70 is processed as previously described. Then, theinner contact 60 is fixed to a front end of the exposedinner conductor 72 of thecable 70. The thus-fixedinner contact 60 is electrically connected with theinner conductor 72 and extends forward from the front end theinner conductor 72. - Then, the
conductive member 40 is attached to thecable 70 so that the exposedouter conductor 76 of thecable 70 is covered thereby in the YZ-plane. When theconductive member 40 is attached to thecable 70, a front part of theouter conductor 76 is exposed from theconductive member 40 and extends forward. Then, the front part of theouter conductor 76 is folded rearward so that a foldedportion 77 is formed. The foldedportion 77 is a part of theouter conductor 76 which is folded rearward. Theouter conductor 76 including the foldedportion 77 is located on an outer circumference of thecable 70 in the YZ-plane. The foldedportion 77 covers theconductive member 40 in the YZ-plane. - Then, the
dielectric member 50 is inserted into thecontact 30 from front and is attached to thecontact 30. Then, thecontact 30 is connected to thecable 70 so that thecontact 30 covers the foldedportion 77 in the YZ-plane. The thus-connectedcontact 30 is electrically connected with theouter conductor 76. Moreover, when thecontact 30 is connected to thecable 70, thedielectric member 50 is attached to theinner contact 60 so that thedielectric member 50 wholly covers theinner contact 60 in the YZ-plane. The thus-attacheddielectric member 50 insulates theinner contact 60. - The
cable assembly 10 which is assembled as described above comprises thecontact 30 and thecable 70. Thecontact 30 is connected to thefront end portion 702 of thecable 70. According to the present embodiment, theouter conductor 76 is formed with the foldedportion 77. Thecontact 30 is connected to the foldedportion 77 of theouter conductor 76. However, the present invention is not limited thereto. For example, the foldedportion 77 may be formed as necessary. In an instance where the foldedportion 77 is not formed, theconductive member 40 may be inserted between theouter conductor 76 and theinner dielectric 74. In another instance where the foldedportion 77 is not formed, theconductive member 40 does not need to be provided. In an instance where the foldedportion 77 is not formed, thecontact 30 may be connected to theouter conductor 76 which is not folded. - When the
cable assembly 10 is assembled as described above, thefront end portion 702 which is one of end portions of thecable 70 is connected to theconnector 20. The opposite end portion (not shown) of thecable 70 is connected to an electronic device (not shown). Under a mated state where theconnector 20 is mated with a mating connector (not shown), the electronic device is electrically connected with a mating electronic device (not shown) which is provided with the mating connector. In detail, under the mated state, theinner contact 60 is connected to a mating signal contact (not shown) of the mating connector and transmits high-frequency signals, for example. Under the mated state, thecontact 30 and theconductive member 40 have ground potentials and reduce noise due to high-frequency signals. - Hereafter, explanation will be made about the
contact 30 of the present embodiment. - Referring to
Figs. 1 and6 , thecontact 30 is configured to be connected to thefront end portion 702 of thecable 70 in the front-rear direction, thecable 70 having theouter conductor 76 provided on the outer circumference thereof. - Referring to
Fig. 3 , thecontact 30 extends along the front-rear direction. Thecontact 30 of the present embodiment is formed by bending a single metal plate about an imaginary axis AX extending in parallel to the front-rear direction. In other words, thecontact 30 is a single metal plate with bends. Thecontact 30 is formed with aslit 302 which extends along the front-rear direction. Theslit 302 is a narrow space. Theslit 302 is located between opposite edges of the bent metal plate in a lateral direction perpendicular to the front-rear direction. Theslit 302 is located at an upper end of thecontact 30 in an upper-lower direction perpendicular to both the front-rear direction and the lateral direction. The lateral direction of the present embodiment is the Y-direction. The upper-lower direction of the present embodiment is the Z-direction. "Upward" means the positive Z-direction, and "downward" means the negative Z-direction. - Referring to
Figs. 1 ,3 and 4 , thecontact 30 is formed with a passinghole 31. The passinghole 31 extends along the imaginary axis AX and passes through thecontact 30 in the front-rear direction. Referring toFig. 7 , in the assembledcable assembly 10, thedielectric member 50 and theinner contact 60 are accommodated in the passinghole 31. The passinghole 31 of the present embodiment has a circular shape in the YZ-plane. However, the present invention is not limited thereto, but the shape of the passinghole 31 can be modified as necessary. - As shown in
Figs. 3, 4 and6 , thecontact 30 of the present embodiment has aconnection portion 32, anarrow portion 34, a receivingportion 35 and acrimp portion 39. Theconnection portion 32 is a front part of thecontact 30. Thecrimp portion 39 is a rear part of thecontact 30. The receivingportion 35 is located forward of thecrimp portion 39. Thenarrow portion 34 is located between theconnection portion 32 and the receivingportion 35 in the front-rear direction. In other words, thenarrow portion 34 is located forward of the receivingportion 35. Thecontact 30 of the present embodiment has the aforementioned structure. However, the present invention is not limited thereto, but the structure of thecontact 30 can be modified as necessary. For example, thecontact 30 may further have another portion in addition to the aforementioned portions. - The
connection portion 32 of the present embodiment extends along the front-rear direction. Theconnection portion 32 is connected to a mating conductive member (not shown) of the mating connector (not shown) under the mated state. Theconnection portion 32 of the present embodiment has a circular shape in the YZ-plane. However, the present invention is not limited thereto, but the shape of theconnection portion 32 can be modified as necessary. For example, theconnection portion 32 may have a rectangular shape in the YZ-plane. - Referring to
Fig. 3 , thecrimp portion 39 of the present embodiment has an open barrel shape. In detail, thecrimp portion 39 has twocrimp pieces 392. Thecrimp pieces 392 are apart from each other before thecontact 30 is connected to the cable 70 (seeFig. 6 ). In other words, thecrimp portion 39 is opened before thecontact 30 is connected to thecable 70. - Referring to
Fig. 6 together withFig. 4 , as described later, when thecontact 30 is connected to thecable 70 in a process in which thecable assembly 10 is assembled, thefront end portion 702 of thecable 70 is inserted into thecontact 30 from behind. Then, thecrimp portion 39 is crimped around thecable 70. In detail, the twocrimp pieces 392 are combined together so that they are wound around theouter conductor 76 and thesheath 78 of thefront end portion 702. In other words, thecrimp portion 39 is crimped on theouter conductor 76 so that it surrounds theouter conductor 76 under a connected state, or a state shown inFig. 6 , where thecontact 30 is connected to thecable 70. Thus, thecrimp portion 39 is closed under the connected state, and thereby thecontact 30 is securely fixed to thecable 70. - The
crimp portion 39 of the present embodiment is crimped around the foldedportion 77 of thecable 70. The foldedportion 77 covers theconductive member 40. Theconductive member 40 of the present embodiment is made of metal and has rigidity. Theconductive member 40 prevents thecable 70 from being deformed when thecrimp portion 39 is crimped, and thereby thecrimp portion 39 is securely crimped around the foldedportion 77. However, the present invention is not limited thereto, but theconductive member 40 may be provided as necessary. - The
crimp portion 39 of the present embodiment encloses theouter conductor 76 with no gap under the connected state except for a slight space formed between the twocrimp pieces 392. However, the present invention is not limited thereto. For example, the structure of thecrimp portion 39 can be modified as necessary. - Referring to
Fig. 5 , the receivingportion 35 of the present embodiment has afront portion 352 and arear portion 354. Thefront portion 352 is a front part of the receivingportion 35. Thefront portion 352 is gradually narrowed forward. In detail, a size of thefront portion 352 in the YZ-plane becomes gradually smaller forward. Therear portion 354 is a rear part of the receivingportion 35. Therear portion 354 has a cylindrical shape as a whole. In detail, therear portion 354 has a constant size in the YZ-plane regardless of a position thereof in the front-rear direction. The receivingportion 35 of the present embodiment has the aforementioned structure. However, the present invention is not limited thereto. For example, the receivingportion 35 may have only therear portion 354. - The receiving
portion 35 of the present embodiment has abody 36 and four pressed portions (spring pieces) 37. Each of thebody 36 and the pressedportions 37 is a part of therear portion 354. Thebody 36 has a ring-like portion 362. The ring-like portion 362 has a circular shape in the YZ-plane. Thebody 36 has a remaining portion which extends rearward from a lower part of the ring-like portion 362. The pressedportions 37 extend rearward from an upper part of the ring-like portion 362. Therear portion 354 of the present embodiment has the aforementioned structure. However, the present invention is not limited thereto. For example, the ring-like portion 362 may be provided as necessary. - The
body 36 has aninner surface 364. Theinner surface 364 is an inside surface of thebody 36 in the YZ-plane and faces the passinghole 31. Theinner surface 364 of thebody 36 extends along the front-rear direction in an imaginary cylindrical surface around the imaginary axis AX. Each of the pressedportions 37 extends along the front-rear direction and has afront end 372 and arear end 374. Each of the front ends 372 is connected to a rear edge of the ring-like portion 362 of thebody 36. Each of the pressedportions 37 has asloping surface 378. Each of the slopingsurfaces 378 faces the passinghole 31. Each of the pressedportions 37 has a part which is located in the vicinity of therear end 374 and is inclined outward in the YZ-plane. As can be seen from the explanation described above, the passinghole 31 of the receivingportion 35 of the present embodiment is widened rearward as a whole. - The
body 36 of the present embodiment is formed with fivecut 38. Each of thecuts 38 extends along the front-rear direction and passes through thebody 36 in the radial direction about the imaginary axis AX. Each of the pressedportions 37 of the present embodiment is aspring piece 37. Each of the pressedportions 37 is located between two of thecuts 38 adjacent to each other in a circumferential direction about the imaginary axis AX. Each of the pressed portions (spring pieces) 37 extends along the front-rear direction and is resiliently deformable with therear end 374 which is a free end. - Referring to
Fig. 7 , thefront end portion 702 of thecable 70 is inserted into the passinghole 31 of thecontact 30 from behind before thecrimp portion 39 is crimped around thecable 70 in a process in which thecontact 30 is connected to thecable 70. Hereafter, explanation will be made about thecontact 30 and theconductive member 40, and explanation will be made about an insertion process of thefront end portion 702. - Referring to
Fig. 5 together withFig. 2 , in the explanation described below, a cross-section of the passinghole 31 in the YZ-plane is referred to as "hole cross-section", and a cross-section of thecable 70 in the YZ-plane is referred to as "cable cross-section". The hole cross-section at therear end 374 of thesloping surface 378 of the receivingportion 35 is larger than the cable cross-section in the vicinity of a front end of theouter conductor 76 of thecable 70. However, the hole cross-section at thefront end 372 of thesloping surface 378 is smaller than the cable cross-section in the vicinity of the front end of theouter conductor 76 of thecable 70. - The
narrow portion 34 of the present embodiment has a size in the YZ-plane which is smaller than another size of the receivingportion 35 in the YZ-plane. In detail, the hole cross-section at thenarrow portion 34 is smaller than the hole cross-section at thefront end 372 of thesloping surface 378. Thus, the hole cross-section at thenarrow portion 34 is smaller than the cable cross-section in the vicinity of the front end of theouter conductor 76 of thecable 70. However, the hole cross-section at thenarrow portion 34 is larger than the cable cross-section of theinner dielectric 74 of thecable 70. - According to the aforementioned structure, the
outer conductor 76 of thefront end portion 702 is insertable into the receivingportion 35 but is not insertable into thenarrow portion 34. However, theinner dielectric 74 and theinner conductor 72 of thefront end portion 702 are insertable into the passinghole 31 of theconnection portion 32 through thenarrow portion 34 together with theinner contact 60. Thus, thenarrow portion 34 of the present embodiment defines a front end of the receivingportion 35 in which theouter conductor 76 is receivable. However, the present invention is not limited thereto. For example, thenarrow portion 34 may be provided as necessary. - In detail, when the
front end portion 702 of thecable 70 is inserted into the passinghole 31 from behind, theouter conductor 76 of thefront end portion 702 is guided by the slopingsurfaces 378 of the pressedportions 37 of the receivingportion 35 and is received in a rear end portion of the receivingportion 35. When thefront end portion 702 is continuously inserted, theouter conductor 76 is moved forward while resiliently deforming the pressedportions 37. Meanwhile, each of the pressedportions 37 is resiliently deformed while therear end 374 is moved outward in the YZ-plane. When thefront end portion 702 is continuously inserted, the front end of theouter conductor 76 is brought into abutment with an inner wall of thefront portion 352 of the receivingportion 35, and the insertion of thefront end portion 702 ends. At that time, theinner conductor 72 of thefront end portion 702 has passed through the receivingportion 35 and is located in theconnection portion 32. - As can be seen from the explanation described above, the receiving
portion 35 partially receives theouter conductor 76 under the connected state. When theouter conductor 76 is received in the receivingportion 35, each of the resiliently deformed pressedportions 37 is pressed against theouter conductor 76 by a restoring force. According to the present embodiment, under the connected state, the front end of theouter conductor 76 is located forward of front ends of thecuts 38. According to this arrangement, theouter conductor 76 can be reliably connected to the receivingportion 35. However, the present invention is not limited thereto. For example, the front end of theouter conductor 76 may be located rearward of the front ends of thecuts 38 under the connected state. - Referring to
Figs. 5 and7 , according to the present embodiment, each of the pressedportions 37 is pressed against theouter conductor 76 while being resiliently deformed in a process in which theouter conductor 76 of thecable 70 is inserted into the receivingportion 35. However, the present invention is not limited thereto. For example, the hole cross-section at thefront end 372 of thesloping surface 378 of the receivingportion 35 may be larger than the cable cross-section in the vicinity of the front end of theouter conductor 76. In this instance, each of the pressedportions 37 may be plastically deformed inward in the YZ-plane to be pressed against theouter conductor 76 after theouter conductor 76 is received in the receivingportion 35. - Referring to
Fig. 3 , according to thecontact 30 such as that of the present embodiment, each of thecrimp pieces 392 of thecrimp portion 39 is apart from the receivingportion 35 and is located rearward of the receivingportion 35. Referring toFig. 6 , according to this structure, thecrimp pieces 392 can be easily wound around theouter conductor 76 of thecable 70. However, when thecrimp portion 39 is crimped on theouter conductor 76, a part located forward of thecrimp portion 39 is inevitably formed with a gap GP. According to the present embodiment, the gap GP is formed between thecrimp pieces 392 and the receivingportion 35. When the gap GP is formed, electromagnetic shielding performance, or anti-noise performance, of thecontact 30 might be degraded. - However, the
contact 30 of the present embodiment has the receivingportion 35 which is located forward of thecrimp portion 39. The receivingportion 35 has two or more of the pressedportions 37. Each of the pressedportions 37 is pressed against theouter conductor 76 to be reliably brought into abutment with theouter conductor 76 and prevent degradation of the anti-noise performance of thecontact 30. Thus, the present embodiment provides thecontact 30 which has stable anti-noise performance. - Referring to
Figs. 2 and7 , theconductive member 40 of the present embodiment has a receivedportion 42. The receivedportion 42 is located at a front end of theconductive member 40. The receivedportion 42 is narrowed forward. In detail, a size of the receivedportion 42 in the YZ-plane becomes gradually smaller forward. As previously described, according to the present embodiment, when thecable assembly 10 is assembled, theouter conductor 76 is formed with the foldedportion 77 which is folded rearward, and theconductive member 40 is located inward of the foldedportion 77 in the YZ-plane. - The
outer conductor 76 of thecable 70 is inserted into the receivingportion 35 together with theconductive member 40 having the receivedportion 42. According to the present embodiment, theouter conductor 76 can be smoothly inserted into the receivingportion 35 because theconductive member 40 having the tapered receivedportion 42 is provided. However, the present invention is not limited thereto, but the structure of theconductive member 40 can be modified as necessary. - As described above, under the connected state according to the present embodiment, the
outer conductor 76 is formed with the foldedportion 77 which is folded rearward, theconductive member 40 is located inward of the foldedportion 77 in the YZ-plane, the foldedportion 77 is sandwiched between thecrimp portion 39 and theconductive member 40, and the receivedportion 42 of theconductive member 40 is received in the receivingportion 35 of thecontact 30 together with the foldedportion 77. - Referring to
Fig. 5 together withFig. 7 , the pressedportions 37 of the present embodiment have shapes same as each other. Moreover, the pressedportions 37 are arranged in the circumferential direction about the imaginary axis AX with regular intervals. However, the present invention is not limited thereto. For example, the pressedportions 37 may have shapes different from each other. Only two of the pressedportions 37 may be formed. These two pressedportions 37 may extend rearward from the vicinity of an upper end of the ring-like portion 362. Instead, a large number of the pressedportions 37 may be formed over whole of the ring-like portion 362 in the circumferential direction. Thecontact 30 is more reliably brought into contact with theouter conductor 76 of thecable 70 by increasing the number of the pressedportions 37. - Referring to
Fig. 6 , each of thecuts 38 of the present embodiment has a size LC in the front-rear direction which is half or more of another size LR of thebody 36 in the front-rear direction. According to this structure, a size of each of the pressedportions 37 can be made large in the front-rear direction and a spring characteristic of each of the pressedportions 37 can be made high. Moreover, in each of thecuts 38 of the present embodiment, the size LC in the front-rear direction is larger than a size WC in the circumferential direction about the imaginary axis AX (seeFig. 5 ). According to this structure, a necessary number of the pressedportions 37 can be formed while the spring characteristic of each of the pressedportions 37 is made high. However, the present invention is not limited thereto, but the structure of each of thecuts 38 can be modified as necessary. - The present embodiment can be further variously modified in addition to the already described various modifications. Hereafter, explanation will be made about modifications of the pressed
portion 37. - Comparing
Fig. 8 withFig. 6 , acable assembly 10A according to a first modification comprises aconnector 20A different from theconnector 20 and thecable 70 same as that of thecable assembly 10. Theconnector 20A has the same structure as that of theconnector 20 except that it comprises acontact 30A different from thecontact 30. Thecontact 30A has the same structure as that of thecontact 30 except that it has a receivingportion 35A different from the receivingportion 35. - Comparing
Fig. 9 withFig. 5 , the receivingportion 35A has abody 36A different from thebody 36 and has four pressed portions (projecting portions) 37A instead of the pressedportions 37. Thebody 36A has aninner surface 364A different from theinner surface 364. The receivingportion 35A has the same structure as that of the receivingportion 35 except for the aforementioned differences. - Referring to
Fig. 9 , thebody 36A has a circular ring shape. Theinner surface 364A of thebody 36A extends along the front-rear direction in an imaginary cylindrical surface. Each of the pressedportions 37A of the present modification is a projectingportion 37A. Each of the projectingportions 37A projects inward from theinner surface 364A of the receivingportion 35A in the YZ-plane. - Referring to
Figs. 8 and9 , according to the present modification, theouter conductor 76 including the foldedportion 77 may be press-fit into the receivingportion 35A. Instead, a part of thebody 36A which is formed with the pressedportions 37A may be opened outward in the YZ-plane before theouter conductor 76 is inserted into the receivingportion 35A. In this instance, the open part may be closed after theouter conductor 76 is received in the receivingportion 35. As a result, theouter conductor 76 is pressed against the pressedportions 37A. In any instances, each of the pressedportions 37A is located outward of theouter conductor 76 in the YZ-plane and is pressed against theouter conductor 76 under the connected state. The present modification provides thecontact 30A which has stable anti-noise performance. - The pressed
portions 37A of the present modification are provided only on an upper part of theinner surface 364A of thebody 36A and are arranged in the circumferential direction about the imaginary axis AX with regular intervals. However, the present invention is not limited thereto. For example, the number and the arrangement of the pressedportions 37A can be modified as necessary. - Comparing
Figs. 10 ,12 and13 withFig. 6 , acable assembly 10B according to a second modification comprises aconnector 20B different from theconnector 20 and thecable 70 same as that of thecable assembly 10. Theconnector 20B has the same structure as that of theconnector 20 except that it comprises acontact 30B different from thecontact 30. Thecontact 30B has the same structure as that of thecontact 30 except that it has a receivingportion 35B different from the receivingportion 35. - Comparing
Fig. 14 withFig. 5 , the receivingportion 35B has arear portion 354B different from therear portion 354. Therear portion 354B has four pressed portions (spring pieces) 37B instead of the pressedportions 37. The receivingportion 35B has the same structure as that of the receivingportion 35 except for the aforementioned differences. - Referring to
Fig. 13 together withFig. 5 , each of the pressedportions 37B is aspring piece 37B. Each of thespring pieces 37B has a structure similar to that of thespring piece 37 and is resiliently deformable similarly to thespring piece 37. However, each of thespring pieces 37B is different from thespring piece 37 in that it extends rearward along the front-rear direction while being inclined inward in the YZ-plane under a state where thecontact 30B is not connected to the cable 70 (seeFig. 10 ). Referring toFig. 11 , each of thespring pieces 37B extends rearward along the front-rear direction while being inclined inward in the YZ-plane even under the connected state. - Referring to
Fig. 11 , when theouter conductor 76 including the foldedportion 77 is inserted into the receivingportion 35B, each of the pressedportions 37B is pressed by theouter conductor 76 and is resiliently deformed so that the pressedportions 37B are opened outward in the YZ-plane. As a result, each of the pressedportions 37B is more securely pressed against theouter conductor 76 than the pressedportion 37. Thus, each of the pressedportions 37B is located outward of theouter conductor 76 in the YZ-plane and is pressed against theouter conductor 76 under the connected state. The present modification provides thecontact 30B which has stable anti-noise performance. - The receiving
portion 35B of the present modification can be modified similarly to the receivingportion 35. Moreover, the aforementioned embodiment can be further variously modified in addition to the already described various modification. For example, referring toFigs. 5 and9 , the receivingportion 35 may have one or more of thespring pieces 37 and one or more of the projectingportions 37A. In other words, at least one of the pressedportions 37 may be a spring piece, and at least one of the pressedportions 37 may be a projecting portion. - The present application is based on a Japanese patent application of
JP2021-119229 filed on July 20, 2021 - While there has been described what is believed to be the preferred embodiment of the invention, those skilled in the art will recognize that other and further modifications may be made thereto without departing from the spirit of the invention, and it is intended to claim all such embodiments that fall within the true scope of the invention.
-
- 10, 10A, 10B
- cable assembly
- 20, 20A, 20B
- connector
- 30, 30A, 30B
- contact
- 302
- slit
- 31
- passing hole
- 32
- connection portion
- 34
- narrow portion
- 35, 35A, 35B
- receiving portion
- 352
- front portion
- 354, 354B
- rear portion
- 36, 36A
- body
- 362
- ring-like portion
- 364, 364A
- inner surface
- 37, 37B
- pressed portion (spring piece)
- 37A
- pressed portion (projecting portion)
- 372
- front end
- 374
- rear end
- 378
- sloping surface
- 38
- cut
- 39
- crimp portion
- 392
- crimp piece
- AX
- imaginary axis
- GP
- gap
- 40
- conductive member
- 42
- received portion
- 50
- dielectric member
- 60
- inner contact
- 70
- cable
- 702
- front end portion
- 72
- inner conductor
- 74
- inner dielectric
- 75
- conductive coat
- 76
- outer conductor
- 77
- folded portion
- 78
- sheath
Claims (7)
- A contact configured to be connected to a front end portion of a cable in a front-rear direction, the cable having an outer conductor provided on an outer circumference thereof, wherein:the contact has a crimp portion and a receiving portion;the crimp portion is crimped on the outer conductor so that it surrounds the outer conductor under a connected state where the contact is connected to the cable;the receiving portion is located forward of the crimp portion and partially receives the outer conductor under the connected state;the receiving portion has two or more pressed portions; andeach of the pressed portions is located outward of the outer conductor in a perpendicular plane perpendicular to the front-rear direction and is pressed against the outer conductor under the connected state.
- The contact as recited in claim 1, wherein:at least one of the pressed portions is a spring piece; andthe spring piece extends along the front-rear direction and is resiliently deformable with a rear end which is a free end.
- The contact as recited in claim 2, wherein the spring piece extends along the front-rear direction while being inclined inward in the perpendicular plane.
- The contact as recited in one of claims 1 to 3, wherein:at least one of the pressed portions is a projecting portion; andthe projecting portion projects inward from an inner surface of the receiving portion in the perpendicular plane.
- The contact as recited in one of claims 1 to 4, wherein:the contact has a narrow portion;the narrow portion is located forward of the receiving portion; andthe narrow portion has a size in the perpendicular plane which is smaller than another size of the receiving portion in the perpendicular plane.
- A connector comprising the contact as recited in one of claims 1 to 5 and a conductive member, wherein:the conductive member has a received portion;the received portion is located at a front end of the conductive member;the received portion is narrowed forward; andunder the connected state, the outer conductor is formed with a folded portion which is folded rearward, the conductive member is located inward of the folded portion in the perpendicular plane, the folded portion is sandwiched between the crimp portion and the conductive member, and the received portion of the conductive member is received in the receiving portion of the contact together with the folded portion.
- A cable assembly comprising the contact as recited in one of claims 1 to 5 and a cable, wherein:the cable has an outer conductor provided on an outer circumference thereof; andthe contact is connected to a front end portion of the cable.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021119229A JP7232290B2 (en) | 2021-07-20 | 2021-07-20 | Contacts, connectors and cable assemblies |
PCT/JP2022/021667 WO2023002750A1 (en) | 2021-07-20 | 2022-05-27 | Contact, connector, and cable assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4343985A1 true EP4343985A1 (en) | 2024-03-27 |
Family
ID=84979133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22845687.7A Pending EP4343985A1 (en) | 2021-07-20 | 2022-05-27 | Contact, connector, and cable assembly |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4343985A1 (en) |
JP (1) | JP7232290B2 (en) |
CN (1) | CN117546376A (en) |
WO (1) | WO2023002750A1 (en) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2900807B2 (en) * | 1994-12-14 | 1999-06-02 | 日本電気株式会社 | EMI countermeasure connector and ground terminal processing method |
JP3797585B2 (en) * | 1998-08-11 | 2006-07-19 | 矢崎総業株式会社 | Shield connector |
JP3645440B2 (en) * | 1999-02-05 | 2005-05-11 | 矢崎総業株式会社 | Coaxial connector terminal processing structure and terminal processing method |
DE202004000165U1 (en) * | 2004-01-08 | 2004-04-01 | Rosenberger Hochfrequenztechnik Gmbh & Co | Coaxial connector for mounting on a coaxial cable |
JP4965226B2 (en) * | 2006-06-23 | 2012-07-04 | 株式会社オートネットワーク技術研究所 | Outer conductor terminal |
JP5582870B2 (en) * | 2010-05-25 | 2014-09-03 | 日本航空電子工業株式会社 | connector |
DE202015000751U1 (en) * | 2015-01-30 | 2015-03-06 | Rosenberger Hochfrequenztechnik Gmbh & Co. Kg | Connector assembly with compensation crimp |
JP6404867B2 (en) * | 2016-01-12 | 2018-10-17 | 矢崎総業株式会社 | Shield connector |
EP3220483A1 (en) | 2016-03-17 | 2017-09-20 | TE Connectivity Germany GmbH | Electric connection device, method of assembling an electrical cable and assembled electrical coaxial cable |
EP3242359B1 (en) * | 2016-05-04 | 2019-07-17 | MD Elektronik GmbH | Cable |
JP2019216042A (en) * | 2018-06-13 | 2019-12-19 | 矢崎総業株式会社 | Terminal unit for coaxial line |
JP2020079336A (en) | 2018-11-12 | 2020-05-28 | 住友ゴム工業株式会社 | Rubber composition and pneumatic tire |
JP7227607B2 (en) * | 2019-04-11 | 2023-02-22 | 日本圧着端子製造株式会社 | Shell structure of connector for differential signal transmission cable |
JP6844760B1 (en) * | 2019-05-10 | 2021-03-17 | 株式会社村田製作所 | Ground connection structure in coaxial connector set |
WO2021065743A1 (en) * | 2019-10-04 | 2021-04-08 | 株式会社村田製作所 | Coaxial connector |
-
2021
- 2021-07-20 JP JP2021119229A patent/JP7232290B2/en active Active
-
2022
- 2022-05-27 CN CN202280044456.0A patent/CN117546376A/en active Pending
- 2022-05-27 WO PCT/JP2022/021667 patent/WO2023002750A1/en active Application Filing
- 2022-05-27 EP EP22845687.7A patent/EP4343985A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN117546376A (en) | 2024-02-09 |
JP7232290B2 (en) | 2023-03-02 |
WO2023002750A1 (en) | 2023-01-26 |
JP2023015445A (en) | 2023-02-01 |
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